Personalized Coolest Bus Driver Ever Toddler T-Shirt. Coolest bus driver ever! Who's the best bus driver? This one! Two thumbs up for this bus driver. Great gift for your favorite bus driver! A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.